DirectionsFROM SAN FRANCISCO/MARIN: Cross the Golden Gate Bridge and follow US-101 N (approx. 49 miles).Take the exit toward River Road/Guerneville. Turn right on Mark West Springs Road. Mark West Springs Road becomes Porter Creek Rd. Turn left onto Petrified Forest Road. Turn Right onto Foothill Blvd./CA-128. Go toward Calistoga/CA-29. Turn right onto CA-29. Proceed down CA-29 approximately 2 miles. Watch for Maple Ave. Slow down when you see Maple Ave. Watch for the driveway to 4045 (Castello di Amorosa) on your right. It comes up quickly after a curve just after Maple Ave. Turn right and come up the driveway to the Castle.